An initial choice that must be made when computing Eq. REF  is which events to include in the analysis. Typically this is done by establishing some detection threshold on the Signal-to-Noise Ratio (SNR) or False Alarm Rate (FAR) and including all events that pass this threshold. We choose to include the 59 events in the third observing run (O3) of the LIGO-Virgo network which have a False Alarm Rate of less than 1 year\(^{-1}\)  and are included in the main BBH analysis of [1]}. We limit ourselves to events in O3 for self-consistency, as the injections we perform to evaluate selection effects (see Section REF ) use O3a and O3b detector sensitivities.
